diff --git a/src/executor/execution_plan.cc b/src/executor/execution_plan.cc
index 49ceddf0a..b8cd08cf7 100644
--- a/src/executor/execution_plan.cc
+++ b/src/executor/execution_plan.cc
@@ -17,6 +17,8 @@ std::vector<T> filter(const std::vector<T>& vec, Predicate pred) {
 
 auto getOpType = [](const std::string& str) {
   if (str == "nop") {
+    return mscclpp::OperationType::THREADBLOCK_BARRIER;
+  } else if (str == "barrier") {
     return mscclpp::OperationType::BARRIER;
   } else if (str == "put") {
     return mscclpp::OperationType::PUT;
@@ -456,6 +458,12 @@ void ExecutionPlan::Impl::setupOperations(const json& gpus, size_t constSrcOffse
           operation.size =
               this->getNChunkSize(rank, this->inputSize, this->outputSize, (uint32_t)op["cnt"], chunkIndexes);
         }
+        if (op.contains("barrier_id")) {
+          operation.deviceSyncerIndex = op["barrier_id"];
+        }
+        if (op.contains("nthread_blocks")) {
+          operation.nThreadBlocks = op["nthread_blocks"];
+        }
         ops.push_back(operation);
       }
       this->operations[rank].push_back(ops);
diff --git a/src/include/execution_common.hpp b/src/include/execution_common.hpp
index 5fb2dbf90..00073e185 100644
--- a/src/include/execution_common.hpp
+++ b/src/include/execution_common.hpp
@@ -30,6 +30,7 @@ enum class ChannelType : uint8_t {
 
 // NOTE(chhwang): any modification here requires corresponding updates in `tools/npkit/npkit_trace_generator.py`.
 enum class OperationType : uint8_t {
+  THREADBLOCK_BARRIER,
   BARRIER,
   PUT,
   PUT_PACKET,
diff --git a/src/include/execution_kernel.hpp b/src/include/execution_kernel.hpp
index 6bf7462f4..193651c47 100644
--- a/src/include/execution_kernel.hpp
+++ b/src/include/execution_kernel.hpp
@@ -530,7 +530,9 @@ __global__ void executionKernel([[maybe_unused]] int rank /*for debug*/, T* inpu
                               event_buffer, &event_buffer_head);
 #endif
 
-    if (op.type == OperationType::BARRIER) {
+    if (op.type == OperationType::THREADBLOCK_BARRIER) {
+      __syncthreads();
+    } else if (op.type == OperationType::BARRIER) {
       int nThreadBlocks = op.nThreadBlocks;
       int syncStateIndex = op.deviceSyncerIndex;
       deviceSyncers[syncStateIndex].sync(nThreadBlocks);
diff --git a/tools/npkit/npkit_trace_generator.py b/tools/npkit/npkit_trace_generator.py
index 9a5b88b44..5547bd771 100644
--- a/tools/npkit/npkit_trace_generator.py
+++ b/tools/npkit/npkit_trace_generator.py
@@ -11,6 +11,7 @@
 def parse_npkit_event_header(npkit_event_header_path):
     npkit_event_def = {"id_to_type": {}, "type_to_id": {}}
     executor_ops = [
+        "THREADBLOCK_BARRIER",
         "BARRIER",
         "PUT",
         "PUT_PACKET",